The Doppler Effect for sound occurs when:
a) the speed of the wave changes
b) the height of the wave changes
c) the distance between the waves change
d)the moving object decreases in speed

I need help ASAP please What did Jefferson worry about France taking over Louisianna Which distribution is symmetrical (bell shaped)?A)B)L1oD) . Which of these perform real-world activities such as eating, sleeping, walking, and running in virtual worlds? Chen Company's Small Motor Division manufactures a number of small motors used in household and office appliances. The Household Division of Chen then assembles and packages such items as blenders and juicers. Both divisions are free to buy and sell any of their components internally or externally. The following costs relate to small motor LN233 on a per unit basis.Fixed cost per unit $5.20Variable cost per unit $10.81Selling price per unit $34.55Assuming that the Small Motor Division has excess capacity, compute the minimum acceptable price for the transfer of small motor LN233 to the Household Division. (Round answer to 2 decimal places.)Minimum transfer price $ per unitAssuming that the Small Motor Division does not have excess capacity, compute the minimum acceptable price for the transfer of the small motor to the Household Division. (Round answer to 2 decimal places.) the flashlight should be returned to mark the owner what is the appositive find the median of data set: 23, 31, 32, 34, 39, 38, 38, 34, 38 Tell me the Rhythm And Beats EX:one two and three and four Need help with this will make brainliest if rightResearch on the different thermal conductivities of different materials. From the different values of the thermal conductivities give seven example of conductors and seven example of insulators I GIVE BRAINLIEST FOR EXPLANATION AND CORRECT ANSWER EXTRA POINTS Please help will mark Brainliest!!!How many grams of HCL (hydrochloric acid) can you make with 50 grams of Cl. H + Cl -> HCL is the balanced equation I think it 1. But I am not sure help me please? Answer each of the following independent questions. Required: Alex Meir recently won a lottery and has the option of receiving one of the following three prizes: (1) $88,000 cash immediately, (2) $34,000 cash immediately and a six-period annuity of $9,300 beginning one year from today, or (3) a six-period annuity of $18,400 beginning one year from today. (FV of $1, PV of $1, FVA of $1, PVA of $1, FVAD of $1 and PVAD of $1) (Use appropriate factor(s) from the tables provided.) 1.1 Assuming an interest rate of 7%, determine the PV value for the above options.1.2 Which option should Alex choose? Option (1) Option (2) Option (3)2. The Weimer Corporation wants to accumulate a sum of money to repay certain debts due on December 31, 2022. Weimer will make annual deposits of $175,000 into a special bank account at the end of each of 10 years beginning December 31, 2013. Assuming that the bank account pays 8% interest compounded annually, what will be the fund balance after the last payment is made on December 31, 2022?Table of calculation function?Payment?N?I?Future value? The probability distribution for arandom variable x is given in the table.-10-505101520Probability.20.15.05.1.25.1.15Find the probability that x = -10 Which expressions are equivalent to 5x-15? Select three options.5(X+15)5(x-3)4x+3y-15-3y+X-7y-6x-8y + x0-20-3x+5+ 8x Please Help!!!!! Ill give thanks and rate best! This is a similar triangle please find the missing length. (?) 8. Is this number correctly written in scientific notation? 6.875 x 10 yes O no How is the prime minister of South Africa and the president of Nigeria alike? Why is it important for scientists to be able to remove DNA from cells?